Wikipedia:Selected anniversaries/April 11

April 11: Juan Santamaría Day in Costa Rica.

Hugo Chávez

• 1241 - Mongols led by Batu Khan and Subutai crushed the Hungarian army of King Béla IV in the Battle of Mohi.

• 1945 - World War II: The Buchenwald concentration camp was liberated.

• 1965 - Fifty-one tornadoes struck six states in the Midwestern United States during the Palm Sunday tornado outbreak.

• 1979 - Uganda-Tanzania War: The Uganda National Liberation Army and Tanzanian forces captured Kampala, forcing Ugandan President for Life Idi Amin to flee.

• 2002 - President Hugo Chávez (pictured) was forced to resign during a military coup attempt in Venezuela.

Recent days: April 10 – April 9 – April 8

More anniversaries:

• March 31
• April 1
• April 2